fix(intel): agilex bitstream pre-authenticate

HSD #15012010816: To add in bitstream pre-authentication checking.

Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>

Author: BenjaminLimJL

plat/intel/soc/common/include/socfpga_mailbox.h

@@ -139,6 +139,7 @@
 #define SOFTFUNC_STATUS_CONF_DONE			(1 << 0)
 #define MBOX_CFGSTAT_STATE_IDLE				0x00000000
 #define MBOX_CFGSTAT_STATE_CONFIG			0x10000000
+#define MBOX_CFGSTAT_VAB_BS_PREAUTH			0x20000000
 #define MBOX_CFGSTAT_STATE_FAILACK			0x08000000
 #define MBOX_CFGSTAT_STATE_ERROR_INVALID		0xf0000001
 #define MBOX_CFGSTAT_STATE_ERROR_CORRUPT		0xf0000002

plat/intel/soc/common/soc/socfpga_mailbox.c

@@ -609,6 +609,11 @@ int intel_mailbox_get_config_status(uint32_t cmd, bool init_done)
 	}
 
 	res = response[RECONFIG_STATUS_STATE];
+
+	if (res == MBOX_CFGSTAT_VAB_BS_PREAUTH) {
+		return MBOX_CFGSTAT_STATE_CONFIG;
+	}
+
 	if ((res != 0U) && (res != MBOX_CFGSTAT_STATE_CONFIG)) {
 		return res;
 	}